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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    table:块级元素
    tr/thead/tbody/caption:占据一整行
    td/th:共享一行
    1.注意层级结构
    2.数据展示
    3.一定不要用于布局结构，推荐使用DIV+CSS
    <span>before</span>
    <table border="10" cellspacing='10' cellpadding="10" align="center">
      <caption>标题</caption>
      <thead>
          <tr align="center">
              <th>编号</th>
              <th>姓名</th>
              <th>地址</th>
          </tr>
      </thead>
      <tbody>
          <tr align="center">
              <td align="right" colspan="3">1</td>
              <!--注释
              <td>张三</td>
              <td>昆山</td>
            -->
          </tr>
          <tr align="center">
            <td rowspan="2">1</td>
            <td>张三</td>
            <td>昆山</td>
        </tr>
        <tr align="center">
             <!--<td>1</td>-->
            <td>张三</td>
            <td>昆山</td>
        </tr>
      </tbody>
    </table>
    <span>before</span>
</body>
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